Index: ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.mm |
diff --git a/ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.mm b/ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.mm |
index f13237ba8c5e92af2306dfe24edfe48237cc740b..912ac2de57acc7c7550ac5cb9c4751558715db15 100644 |
--- a/ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.mm |
+++ b/ios/chrome/browser/metrics/mobile_session_shutdown_metrics_provider.mm |
@@ -13,6 +13,10 @@ |
#import "ios/chrome/browser/crash_report/crash_report_background_uploader.h" |
#import "ios/chrome/browser/metrics/previous_session_info.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace { |
// Logs |type| in the shutdown type histogram. |